I don't know about you, but I don't think I could properly evaluate it if I had to avoid browsing to any website where I might need to enter a password, or unzip password-protected zip files, or, well, do anything that would involve me entering a password.
Why would you use a pre-alpha release of ANY os on your main computer? Or you can download the ISO, enter the key (it's all over the net), and set up an entirely fake user account. It's not like Microsoft has the same "real names" policy as facebook.
Somehow I suspect that pirating something that's being exposed for how much it phones home might not be the smartest idea in the world.